Beachcombing is a fun activity the whole family can get into. Why not take the children to Plage de la Pointe Rouge to see what you can spot strewn along the shore?
You'll find Plage de la Pointe Rouge in the food-lovers district of 8th Arrondissement. Entry is free, so you can leave your credit card safely in your daypack. While you're in the area, why not cross off a few other great sights, such as Chateau dIf, Notre-Dame de la Garde and La Vieille Charite?